﻿using System;

namespace 第三次作业
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
        }
        public class Aa
        {
            int Dd = 30;
        }
        public sealed class Bb
        {

        }
        internal class Cc
        {

        }
        public abstract class Dd
        {

        }
        public class SonDd : Dd
        {

        }

        public static class Ee
        {
            public static int ss = 50;
        }




    }
}
